‘But our study shows the same thing to be true with fathers – his lifestyle, and how old he is, can be reflected in molecules that control gene function. In this way, a father can affect not only his immediate offspring, but future generations as well.’

Scientists say a newborn can be diagnosed with foetal alcohol spectrum disorder, even if the mother has never consumed alcohol (Picture: Getty Images)

For example, a newborn can be diagnosed with foetal alcohol spectrum disorder (FASD), even though the mother has never consumed alcohol.